Papaver somniferum is commonly known as the Opium poppy. This is the species of plant from which opium and poppy seeds are derived. It is the only species of Papaveraceae that is grown on a large scale as an agricultural crop.
P. somniferum has many subspecies and varieties. The colors of their flowers are widely varied. Other physical characteristics vary as well, such as the number and shape of petals, number of seeds, flowers and fruits, the color of the seeds, and the amount of opium...

Papaver bracteatum, commonly referred to as the Iranian poppy, is a hardy perennial poppy. It is high in thebaine, which is an opiate that can be converted into codeine.
P. bracteatum grows on thick stalks that can grow up to 4 feet. Its flowers are large and deep red, measuring up to 8 inches across. There is a notable black spot located near the base of the petals.
The main non-horticultural use of P. bracteatum is the production of thebaine. This substance can be converted to codeine...

A pivoted catch designed to fall into a notch on a ratchet wheel so as to allow movement in only one direction (e.g. on a windlass or in a clock mechanism), or alternatively to move the wheel in one direction.